Robert telschow



(No Model.)

R. TELSOHOW.

ILLUMINATING APPARATUS FOR DENTAL PURPOSES. N-o.-274,671.

Patented Mar. 27,1883.

2- WITNESSES:

- INVE OR a %@M w ATTORNEY UNITED STATES PATENT OFFICE.

ROBERT TELSOHOW, OF BERLIN, GERMANY.

ILLUMINATING APPARATUS FOR DENTAL PURPOSENS.

SPECIFICATION forming part of Letters Patent No. 274,671, dated March :27, 1883.

Application filed February 14,1883. (No model.)

. To all whom it may concern:

tion.

have invented certain new and useful Improvements in Illuminating Apparatus for Dental Purposes, of which the following is a specifica- Thisinvention relates to an improved illuminating device for dentists, which can be readily attached to any lamp without annoyance to the operator or patient, and which admits the light to be thrown to any desired point.

The invention consists of a tube provided with a biconvex lens at one end and .a planoconvex lens at the opposite end, which tube is pivoted to standards of a circular frame that isapplied to the lamp and horizontally adjustable thereon. A reflector is arranged in line with the axis of the tube at the opposite side of the lamp, and above the tube a shade.

In the accompanying drawings, Figure 1 flector.

l the lamp, with upright standards f of a supporting-frame, d, of ring shape, that is tightly clamped by a set-screw, g, to the lamp-burner.

The U-shaped supporting-frame c is pivoted at 2' Ho the standards f, so that the tube a can be set adjusted to diii'erent inclinations to a horizontal line. A reflector, b, is secured to the U-shaped frame in line with the axis of the tube a, but at the opposite side of the lamp. The tube a is rigidly secured in position by means of a slotted arm, h, and setscrew 0. (Shown in Fig. 1.) The tube a is furthermore provided with a shade, m, that is also secured to the frame 0. As the flame is located intermediately between the reflector and the plano-convex lens of the tube a, the rays of light are thrown by the reflector through the lens a, the 'flat side of which faces the flame, and then through the biconvex lens a and from the same, inthe form of a cone of light, to the point to be illuminated. As the reflector b and tube a are adjusted together, it is obvious that the light can be thrown on any desired point, so that adjoining points are not illuminated. The shade m serves to protect the operator and patientfrom the illuminating-rays of light emitted by the If the light is to be concentrated, the end of the tube a is covered by a cap, 1", having a central light-emitting aperture.

Having thus described my invention, I claim as new and desire to secure byLetters Patent- I. An illuminating apparatus for dental purposes, consisting of a tube having a biconvex and a plano-eonvex lens, a reflector arranged in line with the axis of the tube at the opposite side of the lamp, and means whereby the tube and reflector are secured,

for vertical and horizontal adjustment on the lamp, substantially as set forth.

2. An illuminating apparatus for dental purposes, consisting of a light-emitting tube, a, having lenses a a a pivoted frame,'e, a reflector, 11, arranged in line with the axis of the tube at the opposite end of the frame 6, a shade, m, and'means whereby the tube, shad o, and re flector are secured in vertically and horizontally adjustable manner to the lamp, substantially as specified.

3. The combination of the tube at, having lenses a a pivoted connecting-frame e, reflector 1), arranged in line with the axis of the tube a, at the opposite side of the frame 6, means for applying the tube and reflector for horizontal adjustment to the lamp, and means for adjusting the tube and reflector vertically to different inclinations, substantially as set forth. I

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ROBERT TELSOHOW.

Witnesses:

B. Bot, GERARD W. voN NAWROCKI. 

